<template>
    <div>
        <div class="search">
            <input type="text"
                placeholder="输入城市名或拼音"
                class="search-inp"
                v-model="keyWord"
            >
        </div>
        <div class="search-content"
             ref="search"
             v-show="keyWord"
        >
            <ul>
                <li v-for="item of list"
                    :key="item.id"
                    class="search-list border-bottom"
                    @click="handleCityClick(item.name)"
                >
                    {{item.name}}
                </li>
                <li class="search-list border-bottom"
                    v-show="hasNoData">
                    没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
import { clearTimeout, setTimeout } from 'timers'
import BScroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  props: {
    citysList: Object
  },
  data () {
    return {
      keyWord: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    keyWord () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyWord) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let item in this.citysList) {
          this.citysList[item].forEach((value) => {
            if (value.spell.indexOf(this.keyWord) > -1 || value.name.indexOf(this.keyWord) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.search)
  }
}
</script>

<style scoped lang='stylus'>
    @import '~@/assets/styles/varibles.styl';
    .search {
        height : 0.72rem
        background : $bgColor
        padding : 0 0.1rem
        .search-inp {
            height : 0.6rem
            line-height : 0.6rem
            width : 100%
            text-align : center
            border-radius : 0.06rem
            color : #666
            box-sizing : border-box
            padding : 0 0.1rem
        }
    }
    .search-content {
        overflow : hidden
        position : absolute;
        top : 1.59rem
        left : 0
        right : 0
        bottom : 0
        background : #eee
        z-index : 1
        .search-list {
            line-height : 0.62rem
            padding-left : 0.2rem
            color : #666
            background : #fff
        }
    }
</style>
